Pressure expansion rotary motor.



PATENTED FEB. 26, 1907.

E. WHITE. .PRESSURE EXPANSION EOIAEY MoIoE:

Z SHEETS-SHEET 1.

PATENTED FEB. 26, 1907.

, l A. WRITE.

PRESSURE EXPANSION ROTARY MOTOR.

NQ. 845,6OO.

APP-LIOATIO'N EILED APR/1.1906.

2 SHEETS-SHEET 2.

a? Qf/z'z;

M @ma UNITED STAT-iis ARTHUR WHITE, OF SHEBOYGAN FALLS, WISCONSIN.

PRESSURE EXFNSION ROTARY MOTOR..

Specification of Letters Patent.

Patented Feb. 26,1907.

Application led April 4, 1906. Serial No. 309,758.

' thereof, in which pockets steam or other pressure iuid may expand to produce rotation of the rotary member. l

Another object of the invention isto so.

construct the rotary member ofla motor voi this type as to balance the iressures on opposite sides thereof, and thereby avoid end thrust.'

Another object of this invention is to arrange the active faces of the movable menibi-f and the casing so that adjustment may be iade to compensate for wear.

g Another object of this inventifip` is to provide a motor of this type with a supply-passage entering at the center of' the movable.

member and radiating therefrom, forming approximately tangential nozzles at the periphery of the rotary member, the passage of fluid being inwardly to a central exhaust, whereby the-.greatest force of the pressure fluid is applied to the periphery ci the rotary member where its eil'ect will be the greatest and the exhaust will be located at the' centen, where the back pressure will haye the least ell'ect.4

Another object ci this invention is to so position and proportion the size of the pockets of the active 'faces/as to overcome the possibility of a free passage through them in any position of the movable member.

Another object of this invention is to provide for removing the waier of condensation collectingin a motor ci this type.

With the above and other objects in view the invention consists in the expansion-motor herein claimed, its parts and combinations of parts, and all equivalents thereof;

Referring to the accompanyingdrawings, in whichlike characters of reference indicate A the samelparts in the several views, Figure 1 is avertioal central sectional view otan expansion-motor bonstriicted in accordance with this invention.` Fig. 2 is a transversesectional view thereof ontlie plane line 2 2 of Fig. 1. Fig. i), 'is an elevation oi the front face of the movable member. Fig. Aik is a plan View thereof. Fig. 5 is a fragment of the front active face of the casing; tional view of a fragment of a motor, taken on the plane of line 6 6 of Fig. 2.-

In the drawings, 10 represents a base or support for a casing 11. which is of a cylindrieal shape', width its face-plate 12 rigidly secured thereto by bolts 13 'or other suitable means.; Journaled in a projecting central portion of the face-plate 12 and surrounded by a packing-gland 14 is a tubular shaft 15, which has a tapering end seated in a correspondingly-shaped recess 16 in the interior of the easing.` The bore of the tubular shaft- '1'5 is closed b efore it reaches the end of said shaft, and here it communicates through ra.

and Fig. 6 is a secdial openings 17 with radial passages 18 in a y rotary member 19, which is iixed on the said shaft Within the casing, with its tapering hub portion 20 fitting in a correspondinglyvshaped recess in the face-plate 12.' The radial passages 18 communicate withv flaring nozzle-'openings 21, which extendy in the saine rotary direction and 'as nearly at right angles to the radial passages as practicable, so as to approximate a tangential position. These iiaring nozzles 21 open into V-sliapedrecesses 22,' which extend almost entirely4 across the periphery of the rotary member, and near their outletthey have branch passages 23 leading therefrom to the front face of the rotary meiiiber near the edge'thereofj, these branch passages forming nozzles inelined with relation to the face of the rotary member, as theiiiain nozzles 21 are inclined to the periphery thereof. The periphery of the rotary .nieniber between the recesses 22 is honcycoi'nbed with V-sh'aped pockets 24 of dierent lengths and arranged in parallel series, each having an abrupt wall practically radial of the rotary member and an inclined wall so as to form saw-.teeth between them',

allextending in the saine rotarydirection.v

The interior of the casing 11, which fits the tapering periphery of the rotary member, is

similarly provided with pockets 25 to iiiatcli'the pockets 24 and cooperate there- IOS with, but which form saw-teeth between them extending in an opposite rotary dir'ecf tion to those ot the rotary nieniber, as clearly shown inl Fig. 2. Thev front Jfacel of 'the rotary member and the cooperating active'face TIO of the front plate 12 are provided with ,l

LFI

- ianges being tapered at face thereolthis discharge-spacesg'ving as ,ing lubrication, l

of the frame 1.1 is. a discharge-passage 36 for I 30 between el to the casing 1 3'7 t'o the tapering inner- `sind the tapering hub portion oi" the rotary pockets 24 and 25, respectively, which are arranged in concentric rings and are grouped to provide planesurfaces 26 between them at intervals, as clearly shown in Figs. 3, 5, vand 6. rfhe meeting surface between the rotary member vand the casing at the rear -is made as large as practicable by forming one orfmore concentric flanges 27 .on the casing, interfitting with one or more similar flanges 28 on the rotary member, ing surface being'made up of series of pockets 24 and 25 in the faces ofthe-rotary member and the casing, respectively, and the the same taper as the periphery of the rotary member, so. that the adjustment of the rotary member lwith relation to the casing will aiiect all of the meeting surface alike. This adjustment is permitted by reason of the yielding nature of a gasket or packing-ring 29, which seals the joint between the front plate -12 and the edges of the casing 11, it being only necessary to tighten the 'clamping-bolts 13 to 'bring ltheineeting face of the rotary member and itscoperating parts nearer together the lmeet-A At the extreme inner portion of ing surface between the rotary member and the casing 11 there is left an annularspace or other pressure fluid may discharge-from the last series of pockets, and passage-ways 31 lead thereto through the rotary member from the last series of pockets on the front an outlet for the exhaust pressure iluld by communicating through passages 32 in the closed Vend of the tubular shaft 15 with a recess 33, which opens into an lexhaust-pipe 34, threaded into' an adjusting-bushing 34 at the center of the casing 11. Atvan intermediate portion of the meeting surface be- 4tween .the rotary member and theframe 11.

there 'are one or more passages 35, connectingl the opposite active faces of the rotary member to assist in maintaining an e ual pressure on both sides of the rotary mem er,

so that it shall be balanced in its operation,-

avoid frictional resistance and and thereby Oil-cups 36 are connectwear of the parts.

supply lubricant through inclined passages member, respectively, from which places the lubricantnayv spread to other parts requir- At the lowerniost portion water of `condensation which may accumulate inthe motor, there being a sight-gage 39 leading-therefrom with a petcock 4()|` on .its lower end, through which the water of condensation may be discharged,

'In operationsteamunder `pressure is admitted to the :tubular shaft 18 through any suitable coupling (not shown) and passes 'this entire meettheseparts, into which the steam- 1 and the face-plate 12 to l end of the shaft 15 through the radial passages 18 to the nozzles l 21, from which it is ejected forcibly against l the pockets of the casing around the pel riphery of the rotary member and by reacl tion therewith causes the rotation of the rotary member in the direction of the arrow in Fig..2. Between the recesses 22 the steam expands in the closed chambers formed by the opposite pockets 24 sist in this rotation of the rotary member.y .From the pockets around the periphery df the rotary member the steam travels from-one series of pockets tothe next throughout the meeting surface between the rotary member and the frame, the play between these parts providing a limited communication between the successive series oi pockets. 1n each se- -ries thelsteam serves by its expansion toV add to the rotating edect upon the rotary meinber. Finally, on leavingl the last series of pockets the steam passes out :through the space 30,'passag`es 32, and recess 33 to the exhaust-pipe 34. y chargedlthrough the branch nozzles 33 likey Wiseacts upon the cooperating faces of the front of the rotary member and the face-plate to further add to the rotating effect. When it has passed to thelast series of pockets, it is discharged through the passage-ways 31 into the space 30, from which-,it ex au`sts with the other exhaust-steam. 11 The size of the branch vnozzles 23 pro ortions the amount of steam passin` theret Vrough to the amount passing ets on the front ofthe rotary member receive no more than their proper amo'unt of steam to produce the'same amount of end thrust on therotary member in one direction that is produced in the opposite directioii by the steam-passing around, the other face oi' the rotary member, whereby the rotary member isbalanced in its end ressures and end thrust is avoided. In order that this equalizing effect shall be more certain, the passages 35'are provided, connecting the intermediate portions of the 'meeting surfaces on both the pressures on opposite sides may equalize", if there is a difference'. f l

The pockets 24 and 25 being of different I sizes and differently spaced prevent mation ofv a through o en passage around the y complete series of poc iets, as`is clearly illusi, trated in Fig. 2and thus the steanris always l entrapped to some extent, so that its expandraw the facelate 12 closer* to the which'is permitted by th yielding 13 so as to l casing 11,

througth the main nozzles 21, so that the pock-' sides ot the rotary member, through which\ sion vi ill produce work in causing the rotation and 25 to further as- The steam which was disthe fort the adjustment of'bush- .l ing 34 and tightening thecl'amping-screws the -cxh'aast-steam leading from the innernature 'of the gasket29. .This causes the parts to lit more tightly together, and by reason of the uniformtaper to their interfitting surfaces the adjustment has the same effect throughout, and binding is not produced at one part before another part is completely adjusted.

What I claim as my invention is 1. In an expansion-motor, a rotary member, a' casing inclosing the` rotary member and having concentric flanges interfitting with concentric flanges of the rotary member, pockets formed in the meeting faces ofthe rotary member and the casing, and means for discharging steam at the peripher of the rotary member, there being an out et-opening for the exhaust-steam at the axis of the ro tary member. i

2. In an expansion-motor, a rotary member, a casing surrounding the rotary member, a tubular shaft on which the rotary member is fixed, there being passage-ways throu h the rotary member to conduct steam from t e tubular shaft to the periphery of the rotary member, interfitting concentric annular flanges on the rotary member and on the casing, pockets formed in the meeting ysurfaces of the rotary member and the casing in which the steam is adapted to expand to produce rotation of the rotary member, there being a discharge-outlet for the exhaust-steam from the innermost pockets.

3. In an expansion-motor, a rotary membe'r, a casing in which the rotary member is mounted, a face-plate for inclosing the rotary member within the casing, concentric tapering interfitting flanges on the casing and the rotary member, pockets formed on the meeting surfaces between the rotary member and the casing and the face-plate, a tubular shaft on which the rotary member is xed, there bein'g openings through the rotary member to conduct steam from the tubular shaft to Vthe periphery of the rotary member and an outlet for the exhaust-steam leading from the innermost pockets, and means for detachably connecting the face-plate with the casing whereby wear between the parts may be compensated. for.

4. In an .expansion-motor, a rotary member, a casing inclosin the rotary member, a

l tubular shaft` on whic 1 the rotary member is mounted, there'being passage-ways leading from the tubular shaft through the rotary 'member and terminatingin ap roximately tangential nozzles at the perip ery of the rotary member, and pockets formed in the meeting faces of the'rotary member and the 'casing from the eriphery to near the axis of therotary mom er, there being an outlet for most pockets.

5. In an expansion-motor, a rotary member,.a casing inclosin the rotary member, a

passing t mounted, there being passage-ways leadingV from the tubular shaft to the peri hery of thc movable member, and series o? V shaped pockets formed in the meeting faces between the rotary member andthe casing from the erilhery to near the axis of the rotary memer eing so arranged as to avoid la throu hpassage between them at any time, there: emg a discharge for th exhaust ressure liuld leading from the innermost poc ets.

6. In an expansion-motor, a rotary member, a casing containing the rotary member, a face-plate for inclosing the rotary member within the casing, interitting concentric anges on the rotary member and the casing, a tubular shaft on which the rotary member is mounted, there being passage-ways leading from the tubular shaft and terminating' in nozzles at the Eeriphery of the rotary member with brano nozzles leading to the meetthe meeting faces of the rotary member and the casing and the face-plate, there being a discharge-outlet leading from the innermost pockets between the rotary member and the casing andi passage-ways leading from. the innermost pockets between the rotary mem- -ing face between the rotary member and the' face-plate, and series of pockets formed in ber and the face-plate to said discharge-outlet.

7. In an expansion-motor, a rotary member, a casing containing' the rotary member,-

a face-plate, inclosing the rotary memberwithin the casing, a hub on the rotary member littin in the face-plate, a tubular shaft rough theface-plate and fixed to the rotary member, a packin -gland between the face-plate and the tubu ar shaft, interfitting concentric tapering flanges on the rotary member and thecasing, there being passage-ways leading from the tubular shaft in nozzles discharging at the periphery of the rotary member with branch nozzles leading therefrom and discharging at the meeting face between the rotary member and the faceplate, series of V-shalpd pockets formed on the meetingffaces of t e rotary member and the casing and the face-plate and being so arranged as to avoid through connection between them in any. osition of the rotary member, the end of tlllie tubular shaft being closed andfitted in the casing and havin.

discharge-openings formed therein to lea .the exhaust 'pressure Huid from the innermost pockets between the rotary member and the casing, there beingpassage-ways leading from the innermost pockets between the rot-ary member and the face-plate and con-' necting with said (lischar e-openlngs, 'anh exhaust-pipe connecting Wit the Acasing and ICO through the rotary member and terminating IIO adapted to receivethe exhaust pressure fluid4 from the discharge-openings, and oil-cups on the casing and the face-plate having assages leading to the endof the tubular s aft pockets formed on the meeting surfaces bev and the hub of the rotary member reepeci exhaust pressre Huid at the center of the tively.

l Casing, and a bushing threaded on the ex- 8. In an expansion-motor, 'a rotaryinemhiatust-v ipe and in the casing adapted to enber, a casing in which the rotary member is gage t e end of the tubular shaft. for adjustinclosed, concentric tapering interiitting i the position'of the rotary member. flanges on the casing and the rotarymember, Intestmonywhereof I aHiX my signature in presence of two Witnesses. tween the rotary member andthe cas' fr, a v Y ARTHUR XVI-UTE. tubular shaft forad mtting pressure iu .to the pockets at the lperiphery of theV rotary member, an exhaust-pipe for conducting the Witnessesz v R. S. C. CALDWELL, ANNA ESCHMIDTBAUER. 

